/Engine/Source/Editor/UnrealEd/Public/WorkflowOrientedApp/WorkflowTabManager.h
Sets the current history and evoke it, this can either be an old or new history node
void SetCurrentHistory ( [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< struct [FGenericTabHistory](API\Editor\UnrealEd\WorkflowOrientedApp\FGenericTabHistory) > NewHistory, bool bInSaveHistory, bool bShouldRestore )